It was developed in Japan where they found the traditional fog horn, a horn used by ships to announce their presence in low visibility conditions, to be an ugly

It was developed in Japan where they found the traditional fog horn, a horn used by ships to announce their presence in low visibility conditions, to be an ugly drone harsh on the ear. The fog harp was designed to have a rich, melodic pleasance to it, to give the mind a moment of respite from the stress of navigating essentially blindly